Answer:
War broke out in Europe in the summer of 1914, with the Central Powers led by Germany and Austria-Hungary on one side and the Allied countries led by Britain, France, and Russia on the other. At the start of the war, President Woodrow Wilson declared that the United States would be neutral.
Answer C) People in developed countries traveled more and exposed more people. Although this is not certain traveling might help in the spreed of the virus since it has human to human transmission.
The two regions where Europe and Asia.
American Indians or Native Americans
